Fin insert for a surfboard



FIG. 1 is a perspective view of a fin insert for a surfboard showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side elevation view thereof, the left side elevational view being a mirror image thereof;

FIG. 5 is a right end elevational view thereof; the left end elevational view being a mirror image thereof; and,

FIG. 6 is a perspective view of a second embodiment of the fin insert for a surfboard. The second embodiment differs from the first embodiment only in the placement and number of angled screw holes as shown in FIG. 6. The bottom, side and end views of the second embodiment are the same as the first embodiment.

The broken line environmental structure is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a “fin insert for a surfboard,” as shown and described. 